解方程组:X+Y+Z=86 5X=6Y 5X=9ZX+Y+Z=865X=6Y5X=9Z三个方程是分开的
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解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18
解方程组:{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10
解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组 x+y+z=-7 x-y=12 x+y-z=6
解方程组x+y=5 y+z=6 x+z=7
解方程组3x+y+z=6,x+3y+z=5,x+y+3z=9{3x+y+z=6{x+3y+z=5{x+y+3z=9
{x+y+z=6,x-z=2,2x-y+z=5 解方程组
解方程组x-y+z=0,3y-z=8,x+y=6
解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8
解方程组:{2x+y+z=2 x+2y+z=4 x+y+2z=6
解方程组2x+3y-z=12,3x-y+z=4,x+y+z=6
3x-y+z=3,2x+3y-z=12,x+y+z=6解方程组
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
方程组x-y-z=5 y-x-z=1 z-x-y=-15的解是?
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3